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    robbibt

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    [–] The United States mapped in the style of Joy Division's Unknown Pleasures [OC] robbibt 3 points ago in dataisbeautiful

    The natural landscape of the USA mapped in the style of Joy Division's Unknown Pleasures album art, using lines that follow the dips and peaks of valleys, plains, hills, plateaus and mountains! I was inspired to make this map after seeing James Cheshire's beautiful population density 'joyplot' maps a few years ago, which are also very much worth checking out if you're a fan of minimalist maps!

    Mapped entirely using the R programming language, with elevation data obtained from the 30 arc-second resolution Global multi-resolution terrain elevation dataset (GMTED2010) available from the U.S. Geological Survey.

    [–] Can I exchange NDVI for NDWI, NDDI, etc? robbibt 3 points ago in gis

    In fact, I'd highly recommend going through and producing a bunch of common remote sensing indices (more here) using your imagery to see how the results tell different stories about the landscape! It's a really great way to visually explore the different kinds of information that's contained in remote sensing imagery, and will probably teach you a lot more than simply reading about them.

    [–] Can I exchange NDVI for NDWI, NDDI, etc? robbibt 3 points ago * (lasted edited 3 months ago) in gis

    So you're trying to look at water in the landscape instead of vegetation? NDWI and NDVI simply use different combinations of spectral bands to reveal different things about the landscape... they're just as valid as each other provided the input remote sensing imagery is properly processed, and shouldn't require any additional processing steps.

    Along with NDWI (using green and near infra-red bands), I've found MNDWI (using green and middle infra-red) produces better results in a lot of inland environments. I'd test out both and see what performs the best in your study area!

    [–] Battered circular dish on the side of a bridge in Canberra, Australia? robbibt 1 points ago in whatisthisthing

    Ah, it does look speakerish - the bridge doesn't raise/lower though (it's the Kings Avenue Bridge for anyone from Canberra here)

    [–] Battered circular dish on the side of a bridge in Canberra, Australia? robbibt 1 points ago in whatisthisthing

    There was one of these at the top of each structural support of the bridge! About 1m in diameter

    [–] Lakes, rivers and cannals of The Netherlands [2573x3000] robbibt 38 points ago in MapPorn

    Thankyou for sharing! I made this map... There's an album of zoomed-in images here! https://imgur.com/gallery/GSv7L

    [–] What is the dress code at your GIS position? robbibt 2 points ago in gis

    Australian national government organisation here: on my first day I arrived in a fancy shirt and suit pants, and found the office full of people wearing shorts and t-shirts. I generally wear jeans and short-sleeved button-down shirts to work, which seems to be the go-to for everyone classed as a "scientist" in the organisation (which includes GIS experts and computer scientists). People more involved in policy and management tend to wear more formal dress clothes and suits.

    [–] Checked our terrarium this morning, and surprise: six lizards instead of two! robbibt 6 points ago in reptiles

    We basically attempted to replicate their natural habitat as much as possible: thick damp soil, lots of moss and shrubs, and a bunch of taller palms and ferns and rainforest plants. The great thing about these guys is that they don't need any heat (and cooling only on super hot 40 degree C days), so they're super low maintenance!

    [–] Checked our terrarium this morning, and surprise: six lizards instead of two! robbibt 66 points ago * (lasted edited 5 months ago) in reptiles

    Southern Angle-Headed Dragons (Lophosaurus spinipes), native to the east coast of Australia. They're fantastic lizards, and very easy to look after. These are the parents, Jabberwocky and Valkyrie!

    (The babies were completely unexpected... we have a natural substrate and had seen Valkyrie digging some holes a few months ago, but assumed they were all duds when we found a dried up egg on the surface. A very fun surprise!)

    [–] 29-years of land cover change across Canada's forested ecosystems (animation) robbibt 1 points ago * (lasted edited 5 months ago) in dataisbeautiful

    The individual time-step images here were originally published in a research paper here, but the animation was posted on Twitter directly by the author!